Shenzhen HHD Technology co.,ltd is a high-tech IoT company specialised in intelligent E-lock  R&D and production. Mainly products are GPS padlock, container lock, steel wire rope lock and RFID padlocks, door lock, lock valve and satellite communications lock. With professional engineer team, ODM/OEM is available, we can meet customer's different customized product requirements. 

Here is the GPS lock, it is a robust lock with GPS / GSM / RFID technology, together with online platform, user can get lock's real-time status, vehicle's location and running history. It offering real-time 24/7 continuous security without security patrol costs and management. Lock alerts notify you in minutes of break-in attempts so you can take immediate action no matter where you are . 
GPS padlock, for shipping container / vehicle or trailer use, It is a robust padlock together with GPS/GSM/RFID technology, here are some benefits it have:
- Remote locking system  and robust physical protection
- Real-time tracking and lock's status 
- Alerts notify for break-in attempts 
- Online platform provides management, user reports, analysis and data recording etc.
- API/SDK available.